SKU: 31024414031

Troy Lee Designs - D4 Polyacrylite Shadow MIPS Helmet (MTB)

Sale price$249.75 Regular price$277.50
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Ships within 48 hours · Estimated delivery Jul 22 - Jul 27

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Description

Troy Lee Designs - D4 Polyacrylite Shadow MIPS Helmet (MTB)Troy Lee Designs D4 Polyacrylite Shadow MIPS Helmet (MTB) D4 Polyacrylite Shadow MIPS Helmet is a Troy Lee Designs mountain bike helmet built for gravity riders. The D4 platform is known for downhill focused coverage and a locked in feel when the terrain gets steep and fast. The Polyacrylite shell helps keep the price more approachable while still delivering the coverage riders expect. The Shadow look adds personality, making it a good fit for riders

Troy Lee Designs - D4 Polyacrylite Shadow MIPS Helmet (MTB)

D4 Polyacrylite Shadow MIPS Helmet is a Troy Lee Designs mountain bike helmet built for gravity riders. The D4 platform is known for downhill-focused coverage and a locked-in feel when the terrain gets steep and fast. The Polyacrylite shell helps keep the price more approachable while still delivering the coverage riders expect. The Shadow look adds personality, making it a good fit for riders who care about style as much as function. The MIPS-equipped build adds another layer of confidence for riders who prioritize modern helmet technology.

It carries the kind of mountain bike fit that feels settled when speeds rise, but not so heavy or cumbersome that it becomes a distraction on the pedal back up.

Why We Like It: it fits the way a modern MTB helmet should: secure, ventilated, and ready for real terrain.

Why It’ll Work for You: This is a strong pick when you want a mountain bike helmet that feels at home on everything from rough local descents to destination riding.

Variants / Options: multiple sizes and colorways available; check the selector for current stock.

Key Features:
  • The reigning king of full-face helmets, the D4 range expands with a Polyacrylite model packing the same safety and comfort features as the premium carbon and composite models into a price-conscious shell. Details make the D4 the most coveted full-face in mountain biking, including Mips® C2 brain protection, an air intake system for ventilation, and an unmatched anatomical fit.
  • Mips® C2 Rotational Impact Brain Protection System
  • Advanced Polyacrylite shell construction
  • Front air intake system, with high flow through polymer center and power grid side mesh
  • Collarbone Suspension System
  • Breakaway visor screws
  • Anti-microbial padding
  • Quick release contoured 3D cheek pads for anatomically optimized fit

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 31024414031

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4.8 ★★★★★
Based on 29 reviews
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Geospatialdude
Los Angeles, US
★★★★★ 3
Be careful while assembling!
I have bought similair bookcases in the past...long time ago. I thought the quality back then was poor, because it was made out of compressed sawdust with glue ( composite). But these shelves are slightly less quality of those of long ago. The company has made great strides at providing the pieces with pre-drilled holes with excellent precision. However, the composite material does not have quite enough glue mixed within. So the material is ever so slightly crumbly. So once you screw in a screw, don't remove it, because if you do the screw will not hold as good. I reccomend that you add a drop of glue into each hole during assembly. The rotating screw locks are made of cheap pot-metal that will snap if you crank too hard on your screwdriver. The good news is the kit comes with plenty of extra screws, wooden dowels, and such.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 15, 2025
R
Verified Purchase
Randy Deasy
Pawtucket, US
★★★★★ 5
Not to thick or thin well made
Size: Medium, Color: (601) Bittersweet Pink / Stone / Stone
I bought pink so as not to lose when doing laundry with my daughter who steels all socks lol!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
S
Verified Purchase
Stacey Cohick
Alexandria, US
★★★★★ 5
Perfect
Size: X-Large, Color: (601) Bittersweet Pink / Stone / Stone
They were perfect
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Reviewed in the United States on April 27, 2026
S
Verified Purchase
Susan Brown
San Leandro, US
★★★★★ 5
Very Comfortable!
Size: Medium, Color: (601) Bittersweet Pink / Stone / Stone
Very comfortable. Don’t slip off back of heal. Love the colors.
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Reviewed in the United States on March 25, 2026
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Verified Purchase
C. V.
Belleville, US
★★★★★ 5
😊
Size: Medium, Color: (601) Bittersweet Pink / Stone / Stone
These are really nice except I don’t like all the colors of them so I’m getting different ones same company just different colors. I don’t like the thick ones these are perfect.. 🤩
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Reviewed in the United States on February 24, 2026

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